Camera lens set

Abstract

The present application discloses a camera lens group, which includes, in order from the object side to the image side along the optical axis: a first lens with negative optical focal power, whose object side surface is a concave surface; a second lens with optical focal power; a third lens with optical focal power; a fourth lens with optical focal power; a fifth lens with negative optical focal power, whose object side surface is a convex surface; a sixth lens with optical focal power, whose object side surface is a concave surface; and a seventh lens with optical focal power; half of the maximum field of view angle Semi‑FOV of the camera lens group satisfies: Semi‑FOV≥61.69°; and the total effective focal length f of the camera lens group and the effective focal length f1 of the first lens satisfy: ‑3.9≤f1 / f<‑2.5.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and in particular, to a camera lens assembly. Background Art

[0002] Nowadays, smartphones are no longer just a communication device, but have become an indispensable entertainment device for people. The camera capabilities of smartphones have become one of the focuses of people's attention.

[0003] Although ordinary standard lenses can capture clear images in most situations, when shooting vast scenes such as tall buildings or mountains, standard lenses can only capture part of the scenery and cannot show the grandeur and majesty of the scenery. Therefore, among the various types of lenses suitable for smartphone cameras, wide-angle lenses are loved by many photography enthusiasts.

[0004] One of the problems that many lens designers are currently trying to solve is how to reasonably allocate the optical focal length, surface shape and main technical parameters of the camera lens group so that when shooting a vast scene, the camera lens group can not only completely image the scenery on the image plane, but also exaggerate the foreground, show the sense of distance of the scenery, and increase the spatial depth and appeal of the picture. Summary of the invention

[0005] The present application provides a camera lens group, which includes, in order from the object side to the image side along the optical axis: a first lens with negative optical focal power, whose object side surface is concave; a second lens with optical focal power; a third lens with optical focal power; a fourth lens with optical focal power; a fifth lens with negative optical focal power, whose object side surface is convex; a sixth lens with optical focal power, whose object side surface is concave; and a seventh lens with optical focal power; half of the maximum field of view angle Semi-FOV of the camera lens group can satisfy: Semi-FOV≥61.69°; and the total effective focal length f of the camera lens group and the effective focal length f1 of the first lens can satisfy: -3.9≤f1 / f<-2.5.

[0006] In one embodiment, there is at least one aspherical mirror surface from the object side surface of the first lens to the image side surface of the seventh lens.

[0007] In one embodiment, the total effective focal length f of the camera lens group, the effective focal length f5 of the fifth lens, and the effective focal length f6 of the sixth lens may satisfy: -2.2<(f5+f6) / f<-1.4.

[0008] In one embodiment, the total effective focal length f of the camera lens assembly and the curvature radius R1 of the object side surface of the first lens may satisfy: -1.6<R1 / f<-1.4.

[0009] In one embodiment, the maximum effective radius DT31 of the object-side surface of the third lens and the maximum effective radius DT21 of the object-side surface of the second lens may satisfy: 0.5<DT31 / DT21<0.8.

[0010] In one embodiment, the interval T12 between the first lens and the second lens on the optical axis and the center thickness CT1 of the first lens on the optical axis may satisfy: 0.2<T12 / CT1<0.9.

[0011] In one embodiment, a center thickness CT6 of the sixth lens on the optical axis and a center thickness CT7 of the seventh lens on the optical axis may satisfy: 2≤CT6 / CT7<3.

[0012] In one embodiment, half the diagonal length ImgH of the effective pixel area on the imaging plane of the camera lens assembly, the curvature radius R11 of the object side surface of the sixth lens, and the curvature radius R12 of the image side surface of the sixth lens may satisfy: 0.5<ImgH / |R11+R12|<0.8.

[0013] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: 0.2<(R9-R10) / (R9+R10)≤0.56.

[0014] In one embodiment, a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis may satisfy: 2<CT3 / CT4<3.

[0015] In one embodiment, the distance SAG12 from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens on the optical axis and the distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens on the optical axis may satisfy: -1.02≤SAG12 / SAG32<-0.5.

[0016] In one embodiment, a distance TTL from the object side surface of the first lens to the imaging surface of the camera lens assembly on the optical axis and a sum ΣCT of the center thicknesses of the first lens to the seventh lens on the optical axis may satisfy: 0.4<ΣCT / TTL<0.7.

[0017] On the other hand, the present application provides a camera lens group, which includes, in order from the object side to the image side along the optical axis: a first lens with negative optical focal power, whose object side surface is concave; a second lens with optical focal power; a third lens with optical focal power; a fourth lens with optical focal power; a fifth lens with negative optical focal power, whose object side surface is convex; a sixth lens with optical focal power, whose object side surface is concave; and a seventh lens with optical focal power; half of the maximum field of view Semi-FOV of the camera lens group can satisfy: Semi-FOV≥61.69°; and the center thickness CT3 of the third lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis can satisfy: 2<CT3 / CT4<3.

[0018] In one embodiment, the total effective focal length f of the camera lens group, the effective focal length f5 of the fifth lens, and the effective focal length f6 of the sixth lens may satisfy: -2.2<(f5+f6) / f<-1.4.

[0019] In one embodiment, the total effective focal length f of the camera lens assembly and the curvature radius R1 of the object side surface of the first lens may satisfy: -1.6<R1 / f<-1.4.

[0020] In one embodiment, the maximum effective radius DT31 of the object-side surface of the third lens and the maximum effective radius DT21 of the object-side surface of the second lens may satisfy: 0.5<DT31 / DT21<0.8.

[0021] In one embodiment, the interval T12 between the first lens and the second lens on the optical axis and the center thickness CT1 of the first lens on the optical axis may satisfy: 0.2<T12 / CT1<0.9.

[0022] In one embodiment, a center thickness CT6 of the sixth lens on the optical axis and a center thickness CT7 of the seventh lens on the optical axis may satisfy: 2≤CT6 / CT7<3.

[0023] In one embodiment, half the diagonal length ImgH of the effective pixel area on the imaging plane of the camera lens assembly, the curvature radius R11 of the object side surface of the sixth lens, and the curvature radius R12 of the image side surface of the sixth lens may satisfy: 0.5<ImgH / |R11+R12|<0.8.

[0024] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: 0.2<(R9-R10) / (R9+R10)≤0.56.

[0025] In one embodiment, the distance SAG12 from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens on the optical axis and the distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens on the optical axis may satisfy: -1.02≤SAG12 / SAG32<-0.5.

[0026] In one embodiment, the total effective focal length f of the camera lens assembly and the effective focal length f1 of the first lens may satisfy: -3.9≤f1 / f<-2.5.

[0027] In one embodiment, a distance TTL from the object side surface of the first lens to the imaging surface of the camera lens assembly on the optical axis and a sum ΣCT of the center thicknesses of the first lens to the seventh lens on the optical axis may satisfy: 0.4<ΣCT / TTL<0.7.

[0028] The present application adopts seven lenses, and through the reasonable allocation of the optical focal length, surface shape, center thickness of each lens and axial spacing between each lens, the above-mentioned optical imaging system has at least one beneficial effect such as large viewing angle, long depth of field, and high imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0030] Figure 1 A schematic structural diagram of a camera lens assembly according to Embodiment 1 of the present application is shown;

[0031] FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 1 are respectively shown;

[0032] Figure 3 A schematic structural diagram of a camera lens assembly according to Embodiment 2 of the present application is shown;

[0033] 4A to 4D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 2 are respectively shown;

[0034] Figure 5 A schematic structural diagram of a camera lens assembly according to Embodiment 3 of the present application is shown;

[0035] FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 3 are respectively shown;

[0036] Figure 7A schematic structural diagram of a camera lens assembly according to Embodiment 4 of the present application is shown;

[0037] FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 4 are respectively shown;

[0038] Fig. 9 A schematic structural diagram of a camera lens assembly according to Embodiment 5 of the present application is shown;

[0039] FIG. 10A to FIG. 10D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 5 are respectively shown;

[0040] Fig.11 A schematic structural diagram of a camera lens assembly according to Embodiment 6 of the present application is shown;

[0041] FIG. 12A to FIG. 12D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 6 are respectively shown;

[0042] Fig.13 A schematic structural diagram of a camera lens assembly according to Embodiment 7 of the present application is shown; and

[0043] FIG. 14A to FIG. 14D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens group of Example 7 are respectively shown. DETAILED DESCRIPTION

[0044] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0045] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0046] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0047] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0048] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0049] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as those commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0050] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0051] The features, principles and other aspects of the present application are described in detail below.

[0052] The camera lens set according to the exemplary embodiment of the present application may include seven lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The seven lenses are arranged in sequence from the object side to the image side along the optical axis. Any two adjacent lenses from the first lens to the seventh lens may have a spacing distance between them.

[0053] In an exemplary embodiment, the first lens may have negative optical power and its object side surface may be concave; the second lens may have positive optical power or negative optical power; the third lens may have positive optical power or negative optical power; the fourth lens may have positive optical power or negative optical power; the fifth lens may have negative optical power and its object side surface may be convex; the sixth lens may have positive optical power or negative optical power and its object side surface may be concave; and the seventh lens may have positive optical power or negative optical power.

[0054] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: Semi-FOV ≥ 61.69°, where Semi-FOV is half of the maximum field of view of the camera lens assembly. Meeting Semi-FOV ≥ 61.69° can enable the camera lens assembly to have a wide field of view to clearly image a larger field of view.

[0055] In an exemplary embodiment, the camera lens group according to the present application may satisfy: -3.9≤f1 / f<-2.5, wherein f is the total effective focal length of the camera lens group, and f1 is the effective focal length of the first lens. More specifically, f1 and f may further satisfy: -3.9≤f1 / f<-2.8. Satisfying -3.9≤f1 / f<-2.5 can enable the camera lens group to have a wide field of view to clearly image a larger field of view. In an exemplary embodiment, the camera lens group according to the present application may satisfy: -2.2<(f5+f6) / f<-1.4, wherein f is the total effective focal length of the camera lens group, f5 is the effective focal length of the fifth lens, and f6 is the effective focal length of the sixth lens. More specifically, f5, f6 and f may further satisfy: -2.1<(f5+f6) / f<-1.7. Satisfying -2.2<(f5+f6) / f<-1.4 is conducive to better balancing the aberrations of the camera lens group, and is also conducive to improving the resolution of the lens group.

[0056] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: -1.6<R1 / f<-1.4, where f is the total effective focal length of the camera lens assembly, and R1 is the radius of curvature of the object side of the first lens. Satisfying -1.6<R1 / f<-1.4 can reduce the field curvature and distortion of the camera lens assembly, and at the same time reduce the difficulty of processing the first lens.

[0057] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 0.5<DT31 / DT21<0.8, wherein DT31 is the maximum effective radius of the object side of the third lens, and DT21 is the maximum effective radius of the object side of the second lens. More specifically, DT31 and DT21 may further satisfy: 0.6<DT31 / DT21<0.8. Satisfying 0.5<DT31 / DT21<0.8 is beneficial to the stability of the lens assembly.

[0058] In an exemplary embodiment, the camera lens group according to the present application may satisfy: 0.2<T12 / CT1<0.9, wherein T12 is the spacing distance between the first lens and the second lens on the optical axis, and CT1 is the center thickness of the first lens on the optical axis. More specifically, T12 and CT1 may further satisfy: 0.5<T12 / CT1<0.7. Satisfying 0.2<T12 / CT1<0.9 can ensure the processing and assembly characteristics of the lens group, avoid problems such as interference between the front and rear lenses during the assembly process due to too small a gap; at the same time, it is beneficial to reduce light deflection, adjust the field curvature of the camera lens group, reduce sensitivity, and thus obtain better imaging quality.

[0059] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 2≤CT6 / CT7<3, wherein CT6 is the center thickness of the sixth lens on the optical axis, and CT7 is the center thickness of the seventh lens on the optical axis. More specifically, CT6 and CT7 may further satisfy: 2≤CT6 / CT7<2.8. Satisfying 2≤CT6 / CT7<3 can make the sixth lens and the seventh lens easy to injection mold, improve the processability of the imaging system, and help ensure good imaging quality.

[0060] In an exemplary embodiment, the camera lens group according to the present application may satisfy: 0.5<ImgH / |R11+R12|<0.8, wherein ImgH is half of the diagonal length of the effective pixel area on the imaging plane of the camera lens group, R11 is the radius of curvature of the object side of the sixth lens, and R12 is the radius of curvature of the image side of the sixth lens. More specifically, ImgH, R11, and R12 may further satisfy: 0.6<ImgH / |R11+R12|<0.8. Satisfying 0.5<ImgH / |R11+R12|<0.8 is beneficial to reducing the sensitivity of the lens group, to achieving characteristics such as a large field of view and high resolution, and to ensuring good processability.

[0061] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 0.2<(R9-R10) / (R9+R10)≤0.56, wherein R9 is the radius of curvature of the object side surface of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. More specifically, R9 and R10 may further satisfy: 0.4<(R9-R10) / (R9+R10)≤0.56. Satisfying 0.2<(R9-R10) / (R9+R10)≤0.56 is beneficial to the processing and molding of the fifth lens.

[0062] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 2<CT3 / CT4<3, wherein CT3 is the center thickness of the third lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis. More specifically, CT3 and CT4 may further satisfy: 2.2<CT3 / CT4<2.7. Satisfying 2<CT3 / CT4<3 can make the third lens and the fourth lens easy to injection mold, improve the processability of the lens assembly, and at the same time help to ensure good imaging quality.

[0063] In an exemplary embodiment, the camera lens group according to the present application may satisfy: -1.02≤SAG12 / SAG32<-0.5, wherein SAG12 is the distance from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens on the optical axis, and SAG32 is the distance from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens on the optical axis. More specifically, SAG12 and SAG32 may further satisfy: -1.02≤SAG12 / SAG32<-0.6. Satisfying -1.02≤SAG12 / SAG32<-0.5 is conducive to better balancing the aberrations of the camera lens group, and at the same time is conducive to improving the resolution of the lens group.

[0064] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 0.4<ΣCT / TTL<0.7, wherein TTL is the distance from the object side of the first lens to the imaging surface of the camera lens assembly on the optical axis, and ΣCT is the sum of the center thicknesses of the first lens to the seventh lens on the optical axis. More specifically, ΣCT and TTL may further satisfy: 0.5<ΣCT / TTL<0.7. Satisfying 0.4<ΣCT / TTL<0.7 can make the lens easy to be injection molded, improve the processability of the lens assembly, and at the same time help to ensure good imaging quality.

[0065] In an exemplary embodiment, the camera lens group according to the present application also includes an aperture arranged between the second lens and the third lens. Optionally, the above-mentioned camera lens group may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The present application proposes a camera lens group with characteristics such as a large viewing angle, a long depth of field and high imaging quality. The camera lens group according to the above-mentioned embodiment of the present application may use multiple lenses, such as the seven lenses mentioned above. By reasonably allocating the optical focal length, surface shape, center thickness of each lens and axial spacing between each lens, etc., the incident light can be effectively converged, the total optical length of the imaging lens can be reduced, and the processability of the imaging lens can be improved, so that the optical imaging lens is more conducive to production and processing.

[0066] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side of the first lens to the image side of the seventh lens is an aspherical mirror surface. The characteristic of the aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is an aspherical mirror surface. Optionally, the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are all aspherical mirror surfaces.

[0067] However, it should be understood by those skilled in the art that, without departing from the technical solution claimed in the present application, the number of lenses constituting the camera lens group can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiments, the camera lens group is not limited to including seven lenses. If necessary, the camera lens group may also include other numbers of lenses.

[0068] Specific embodiments of the camera lens assembly applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0069] Example 1

[0070] The following reference Figures 1 to 2D A camera lens assembly according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of a camera lens assembly according to Embodiment 1 of the present application is shown.

[0071] like Figure 1 As shown, the camera lens group includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0072] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has positive power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0073] Table 1 shows a basic parameter table of the camera lens set of Example 1, wherein the units of the curvature radius, thickness / distance and focal length are all millimeters (mm).

[0074]

[0075]

[0076] Table 1

[0077] In this example, the total effective focal length f of the camera lens group is 2.26 mm, the total length TTL of the camera lens group (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17 of the camera lens group) is 5.85 mm, half of the diagonal length of the effective pixel area on the imaging surface S17 of the camera lens group ImgH is 3.63 mm, half of the maximum field of view angle Semi-FOV of the camera lens group is 61.69°, and the aperture value Fno of the camera lens group is 2.28.

[0078] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0079]

[0080] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, 10 , A 12 , A14 , A 16 , A 18 and A 20 .

[0081] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.3557E-01 -1.8811E-01 1.5152E-01 -9.5060E-02 4.3472E-02 -1.3755E-02 2.8469E-03 -3.4795E-04 1.9017E-05 S2 3.1987E-01 -7.0626E-03 -1.1246E+00 3.8709E+00 -7.0623E+00 7.7317E+00 -5.0223E+00 1.7622E+00 -2.5528E-01 S3 9.3426E-02 -5.7310E-01 2.5400E+00 -8.8982E+00 2.1045E+01 -3.2326E+01 3.0443E+01 -1.5931E+01 3.5623E+00 S4 1.4768E-02 -4.9225E-01 5.7490E+00 -4.2128E+01 1.9346E+02 -5.5505E+02 9.6442E+02 -9.2873E+02 3.8178E+02 S5 3.4010E-02 -1.0886E+00 1.2994E+01 -9.8884E+01 4.6451E+02 -1.3602E+03 2.3870E+03 -2.2638E+03 8.7084E+02 S6 6.5872E-02 -2.5211E-01 2.7936E-01 4.7119E+00 -2.7774E+01 7.4834E+01 -1.1221E+02 8.9498E+01 -2.9445E+01 S7 7.3321E-02 -7.1629E-01 2.9611E+00 -7.4724E+00 1.2373E+01 -1.2896E+01 7.3780E+00 -1.4772E+00 -2.0343E-01 S8 6.9701E-02 -3.7586E-01 -3.7779E-02 3.3824E+00 -1.0415E+01 1.6043E+01 -1.3915E+01 6.4682E+00 -1.2482E+00 S9 -5.0375E-02 -2.8619E-01 5.9281E-01 -7.6788E-01 9.1068E-01 -1.1148E+00 9.7200E-01 -4.6169E-01 8.8387E-02 S10 -9.8890E-02 -1.6360E-02 9.6982E-02 -7.6152E-02 1.2068E-02 1.6277E-02 -1.0927E-02 2.7270E-03 -2.4965E-04 S11 9.8782E-02 -2.8544E-01 4.8874E-01 -5.2893E-01 3.7377E-01 -1.6654E-01 4.4354E-02 -6.3815E-03 3.7801E-04 S12 2.5574E-02 2.7025E-01 -6.5622E-01 8.0744E-01 -5.8297E-01 2.5797E-01 -6.8420E-02 9.9345E-03 -6.0506E-04 S13 1.6818E-02 -1.5372E-01 1.3602E-01 -6.3166E-02 1.7309E-02 -2.8648E-03 2.8076E-04 -1.4965E-05 3.3315E-07 S14 -7.8456E-02 1.8730E-02 4.6427E-04 -1.6275E-03 4.5430E-04 -6.2872E-05 4.7673E-06 -1.8333E-07 2.6353E-09

[0082] Table 2

[0083] Figure 2A The axial chromatic aberration curve of the camera lens set of Example 1 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens. Figure 2B The astigmatism curve of the imaging lens set of Example 1 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 2C The distortion curve of the camera lens assembly of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 2D The magnification chromatic aberration curve of the camera lens set of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 2A to FIG. 2D It can be seen that the camera lens assembly provided in Example 1 can achieve good imaging quality.

[0084] Example 2

[0085] The following reference Figures 3 to 4D The camera lens assembly according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3 A schematic structural diagram of a camera lens assembly according to Embodiment 2 of the present application is shown.

[0086] like Figure 3 As shown, the camera lens group includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0087] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has positive power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0088] In this example, the total effective focal length f of the camera lens group is 2.13 mm, the total length TTL of the camera lens group is 5.81 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens group is 3.63 mm, half of the maximum field of view Semi-FOV of the camera lens group is 64.48°, and the aperture value Fno of the camera lens group is 2.28.

[0089] Table 3 shows the basic parameters of the camera lens set of Example 2, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 4 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 2, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0090]

[0091]

[0092] Table 3

[0093] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.3726E-01 -1.9564E-01 1.5906E-01 -9.9861E-02 4.5240E-02 -1.4040E-02 2.8119E-03 -3.2617E-04 1.6616E-05 S2 3.6998E-01 -3.1544E-01 1.0439E-01 6.9756E-01 -1.8284E+00 2.2934E+00 -1.6229E+00 6.0815E-01 -9.3026E-02 S3 1.1964E-01 -6.6991E-01 2.6267E+00 -8.4717E+00 1.9208E+01 -2.9736E+01 2.9274E+01 -1.6233E+01 3.8389E+00 S4 4.3218E-02 -3.8274E-01 1.4901E+00 -5.0945E-01 -2.2101E+01 9.6603E+01 -1.9297E+02 1.9399E+02 -7.8156E+01 S5 -1.0788E-02 1.8944E-01 -3.7767E+00 2.5078E+01 -9.4321E+01 1.7103E+02 -3.4500E+01 -3.4940E+02 3.7400E+02 S6 9.0831E-02 -6.8063E-01 4.4740E+00 -2.0258E+01 6.2886E+01 -1.2714E+02 1.5727E+02 -1.0765E+02 3.1144E+01 S7 8.5341E-02 -8.1526E-01 3.3190E+00 -8.8336E+00 1.6604E+01 -2.1181E+01 1.6971E+01 -7.5254E+00 1.3936E+00 S8 8.0699E-02 -6.6697E-01 1.8649E+00 -3.1012E+00 2.9740E+00 -1.2494E+00 -2.9063E-01 4.8748E-01 -1.2918E-01 S9 -5.6021E-02 -3.5925E-01 8.9689E-01 -1.0688E+00 4.7115E-01 2.9675E-01 -5.4122E-01 3.0674E-01 -6.5774E-02 S10 -8.3881E-02 -9.6005E-02 3.0896E-01 -3.8329E-01 2.8213E-01 -1.3505E-01 4.2618E-02 -8.2310E-03 7.3609E-04 S11 8.7881E-02 -2.2586E-01 3.8727E-01 -4.3867E-01 3.2461E-01 -1.5071E-01 4.2035E-02 -6.4370E-03 4.1677E-04 S12 -1.3257E-02 3.5649E-01 -7.7699E-01 9.5183E-01 -7.0384E-01 3.2096E-01 -8.7915E-02 1.3224E-02 -8.3792E-04 S13 -3.0226E-02 -1.4044E-01 1.5326E-01 -8.3490E-02 2.6963E-02 -5.3194E-03 6.2847E-04 -4.0794E-05 1.1165E-06 S14 -1.3597E-01 6.6785E-02 -2.2177E-02 4.9010E-03 -7.1246E-04 6.3569E-05 -2.8751E-06 1.7351E-08 2.3569E-09

[0094] Table 4

[0095] Figure 4A The axial chromatic aberration curve of the camera lens set of Example 2 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 4B The astigmatism curve of the imaging lens set of Example 2 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 4C The distortion curve of the camera lens assembly of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 4D The magnification chromatic aberration curve of the camera lens set of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 4A to 4DIt can be seen that the camera lens set provided in Example 2 can achieve good imaging quality.

[0096] Example 3

[0097] The following reference Figures 5 to 6D A camera lens set according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of a camera lens assembly according to Embodiment 3 of the present application is shown.

[0098] like Figure 5 As shown, the camera lens group includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0099] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has negative power, and its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has positive power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0100] In this example, the total effective focal length f of the camera lens group is 2.13 mm, the total length TTL of the camera lens group is 5.72 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens group is 3.63 mm, half of the maximum field of view Semi-FOV of the camera lens group is 64.03°, and the aperture value Fno of the camera lens group is 2.28.

[0101] Table 5 shows the basic parameters of the camera lens set of Example 3, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 6 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 3, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0102]

[0103] Table 5

[0104]

[0105]

[0106] Table 6

[0107] Fig. 6A The axial chromatic aberration curve of the camera lens set of Example 3 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the imaging lens set of Example 3 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 6C The distortion curve of the camera lens assembly of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Fig.6D The magnification chromatic aberration curve of the camera lens set of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 6A to FIG. 6D It can be seen that the camera lens set provided in Example 3 can achieve good imaging quality.

[0108] Example 4

[0109] The following reference Figures 7 to 8D A camera lens set according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of a camera lens assembly according to Embodiment 4 of the present application is shown.

[0110] like Figure 7 As shown, the camera lens group includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0111] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has positive power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0112] In this example, the total effective focal length f of the camera lens group is 2.15 mm, the total length TTL of the camera lens group is 5.71 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens group is 3.63 mm, half of the maximum field of view Semi-FOV of the camera lens group is 63.71°, and the aperture value Fno of the camera lens group is 2.28.

[0113] Table 7 shows the basic parameters of the camera lens set of Example 4, where the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 8-1 and 8-2 respectively show the high-order coefficients of each aspherical mirror surface that can be used in Example 4, where the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0114]

[0115]

[0116] Table 7

[0117] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.4720E-01 -3.6015E-01 7.9049E-01 -1.5317E+00 2.2390E+00 -2.4003E+00 1.8885E+00 S2 3.3731E-01 -6.1918E-02 -3.8668E+00 3.6765E+01 -2.0106E+02 7.3500E+02 -1.8795E+03 S3 1.0488E-01 -8.5604E-01 5.4958E+00 -2.6192E+01 6.4006E+01 7.2790E+01 -1.1992E+03 S4 9.2942E-03 1.3518E+00 -3.9494E+01 6.0517E+02 -5.9572E+03 4.0334E+04 -1.9384E+05 S5 1.2657E-01 -9.2639E+00 3.3255E+02 -7.5998E+03 1.1665E+05 -1.2487E+06 9.5395E+06 S6 1.3536E-01 -2.8799E+00 4.9418E+01 -5.7353E+02 4.5335E+03 -2.5062E+04 9.9091E+04 S7 7.5072E-02 -7.1112E-01 2.7800E+00 -6.4454E+00 7.3142E+00 1.0363E+01 -7.7104E+01 S8 7.9086E-02 -5.7013E-01 1.6036E+00 -5.8190E+00 3.2052E+01 -1.4491E+02 4.5306E+02 S9 -6.5159E-02 -8.7380E-02 -2.2348E+00 2.1514E+01 -1.1249E+02 3.9941E+02 -1.0059E+03 S10 -8.9720E-02 -4.1287E-03 7.7769E-02 -5.6842E-01 2.8571E+00 -7.5650E+00 1.2250E+01 S11 8.9780E-02 -5.2014E-01 2.4356E+00 -7.6605E+00 1.6606E+01 -2.5490E+01 2.8185E+01 S12 -4.1488E-01 3.1250E+00 -1.1415E+01 2.7548E+01 -4.6662E+01 5.7092E+01 -5.1178E+01 S13 1.3765E-01 -4.9248E-01 6.5204E-01 -5.8971E-01 4.1490E-01 -2.3650E-01 1.0718E-01 S14 -3.5166E-02 -1.0383E-01 1.5541E-01 -1.1922E-01 6.0808E-02 -2.2465E-02 6.2376E-03

[0118] Table 8-1

[0119]

[0120]

[0121] Table 8-2

[0122] Fig. 8A The axial chromatic aberration curve of the camera lens set of Example 4 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the imaging lens set of Example 4 is shown, which indicates the meridional image curvature and the sagittal image curvature. Figure 8C The distortion curve of the camera lens assembly of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Fig.8D The magnification chromatic aberration curve of the camera lens set of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 8A to FIG. 8D It can be seen that the camera lens set provided in Example 4 can achieve good imaging quality.

[0123] Example 5

[0124] The following reference Figures 9 to 10D A camera lens set according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of a camera lens assembly according to embodiment 5 of the present application is shown.

[0125] like Fig. 9 As shown, the camera lens group includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0126] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0127] In this example, the total effective focal length f of the camera lens group is 2.18 mm, the total length TTL of the camera lens group is 5.71 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens group is 3.53 mm, half of the maximum field of view angle Semi-FOV of the camera lens group is 62.15°, and the aperture value Fno of the camera lens group is 2.28.

[0128] Table 9 shows the basic parameters of the camera lens set of Example 5, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 10-1 and 10-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 5, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0129]

[0130]

[0131] Table 9

[0132] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.3984E-01 -2.0767E-01 1.6271E-01 6.9332E-03 -3.0476E-01 5.7369E-01 -6.2735E-01 S2 3.6761E-01 -6.2755E-01 2.7890E+00 -1.2714E+01 4.3541E+01 -1.0600E+02 1.8401E+02 S3 -1.0601E-01 4.3568E+00 -6.8457E+01 6.4681E+02 -4.0664E+03 1.7818E+04 -5.5847E+04 S4 -1.6138E-01 6.3713E+00 -1.3790E+02 1.8984E+03 -1.7713E+04 1.1663E+05 -5.5482E+05 S5 9.7333E-01 -6.7261E+01 2.5070E+03 -5.9355E+04 9.4699E+05 -1.0578E+07 8.4662E+07 S6 1.2667E-01 -2.0387E+00 3.0489E+01 -3.1581E+02 2.2516E+03 -1.1155E+04 3.8911E+04 S7 7.3772E-02 -7.2905E-01 3.0613E+00 -8.4079E+00 1.8117E+01 -3.8094E+01 9.8603E+01 S8 8.1902E-02 -5.1204E-01 6.6748E-01 1.7443E+00 -9.6682E+00 1.8613E+01 -8.7901E+00 S9 -5.4583E-02 -2.2305E-01 -2.6827E-01 4.0653E+00 -8.8596E+00 -1.7616E+01 1.4626E+02 S10 -9.0705E-02 -9.3618E-02 4.0138E-01 -6.6428E-01 4.7777E-01 3.5962E-01 -1.3448E+00 S11 8.1923E-02 -2.2878E-01 4.7794E-01 -7.3473E-01 6.3174E-01 2.2297E-01 -1.4513E+00 S12 6.6847E-02 -2.5934E-01 2.0994E+00 -7.5167E+00 1.5836E+01 -2.2050E+01 2.1406E+01 S13 5.0456E-02 -2.1734E-01 2.2839E-01 -1.5751E-01 8.1202E-02 -3.2142E-02 9.7064E-03 S14 -4.6893E-02 -6.3050E-02 1.1833E-01 -1.1069E-01 6.8687E-02 -3.0019E-02 9.4499E-03

[0133] Table 10-1

[0134]

[0135]

[0136] Table 10-2

[0137] Fig. 10A The axial chromatic aberration curve of the camera lens set of Example 5 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens. Fig. 10B The astigmatism curve of the imaging lens set of Example 5 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig. 10C The distortion curve of the camera lens assembly of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Fig. 10D The magnification chromatic aberration curve of the camera lens set of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 10A to FIG. 10D It can be seen that the camera lens set provided in Example 5 can achieve good imaging quality.

[0138] Example 6

[0139] The following reference Figures 11 to 12D A camera lens set according to Embodiment 6 of the present application is described. Fig.11 A schematic structural diagram of a camera lens assembly according to Example 6 of the present application is shown.

[0140] like Fig.11 As shown, the camera lens group includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0141] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is concave. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0142] In this example, the total effective focal length f of the camera lens group is 2.15 mm, the total length TTL of the camera lens group is 5.72 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens group is 3.63 mm, half of the maximum field of view Semi-FOV of the camera lens group is 64.28°, and the aperture value Fno of the camera lens group is 2.28.

[0143] Table 11 shows the basic parameters of the camera lens set of Example 6, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 12 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 6, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0144]

[0145] Table 11

[0146] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.3595E-01 -1.8336E-01 1.3637E-01 -7.6015E-02 2.9640E-02 -7.5113E-03 1.1088E-03 -7.3558E-05 2.4190E-07 S2 3.2762E-01 -9.5980E-02 -7.0376E-01 2.6531E+00 -4.8782E+00 5.3291E+00 -3.4557E+00 1.2103E+00 -1.7503E-01 S3 7.7896E-02 -4.1702E-01 1.6435E+00 -5.5255E+00 1.3209E+01 -2.1259E+01 2.0989E+01 -1.1305E+01 2.5422E+00 S4 -1.9289E-02 3.2350E-01 -3.9405E+00 2.6835E+01 -1.0852E+02 2.6529E+02 -3.8689E+02 3.0907E+02 -1.0193E+02 S5 2.8448E-02 -1.3414E+00 2.1900E+01 -2.1768E+02 1.3071E+03 -4.8478E+03 1.0849E+04 -1.3434E+04 7.0705E+03 S6 5.0595E-02 -9.0921E-02 1.1119E-01 7.9672E-01 -2.6476E+00 2.1500E+00 1.3637E+00 -3.1409E+00 1.4468E+00 S7 7.2738E-02 -7.2060E-01 3.0274E+00 -7.8978E+00 1.3828E+01 -1.5637E+01 9.5944E+00 5.4682E-01 -8.8875E+00 S8 7.1872E-02 -3.8887E-01 5.0452E-03 3.2267E+00 -9.5627E+00 1.1846E+01 7.7331E-01 -2.9297E+01 5.9920E+01 S9 -5.4828E-02 -2.8520E-01 6.0274E-01 -6.2849E-01 2.2462E-01 1.7688E-01 -2.6389E-01 1.3875E-01 -2.9316E-02 S10 -9.6545E-02 -4.0582E-02 1.9632E-01 -2.6345E-01 2.0970E-01 -1.0845E-01 3.5998E-02 -6.9975E-03 6.0489E-04 S11 8.1800E-02 -1.8912E-01 2.5696E-01 -2.1090E-01 1.0607E-01 -2.7031E-02 6.5823E-04 1.1360E-03 -1.6717E-04 S12 5.8027E-03 3.1466E-01 -6.7144E-01 7.5091E-01 -4.9962E-01 2.0558E-01 -5.0935E-02 6.9010E-03 -3.8922E-04 S13 3.5446E-02 -1.4289E-01 1.0498E-01 -4.1876E-02 1.0066E-02 -1.4781E-03 1.2903E-04 -6.1165E-06 1.2029E-07 S14 -5.9191E-02 3.8367E-03 6.3895E-03 -3.0993E-03 7.1041E-04 -9.4444E-05 7.3521E-06 -3.0755E-07 5.2726E-09

[0147] Table 12

[0148] Fig. 12A The axial chromatic aberration curve of the camera lens set of Example 6 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens. Fig. 12B The astigmatism curve of the imaging lens group of Example 6 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig. 12C The distortion curve of the camera lens assembly of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Fig.12D The magnification chromatic aberration curve of the camera lens set of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 12A to FIG. 12D It can be seen that the camera lens set provided in Example 6 can achieve good imaging quality.

[0149] Example 7

[0150] The following reference Figures 13 to 14D A camera lens set according to Embodiment 7 of the present application is described. Fig.13 A schematic structural diagram of a camera lens assembly according to Example 7 of the present application is shown.

[0151] like Fig.13 As shown, the camera lens group includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0152] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0153] In this example, the total effective focal length f of the camera lens group is 2.13 mm, the total length TTL of the camera lens group is 5.79 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens group is 3.63 mm, half of the maximum field of view angle Semi-FOV of the camera lens group is 64.38°, and the aperture value Fno of the camera lens group is 2.28.

[0154] Table 13 shows the basic parameters of the camera lens set of Example 7, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 14 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 7, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0155]

[0156]

[0157] Table 13

[0158] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.2528E-01 -1.7775E-01 1.4142E-01 -8.8095E-02 3.9998E-02 -1.2521E-02 2.5379E-03 -2.9825E-04 1.5382E-05 S2 3.4733E-01 -2.8041E-01 1.5716E-01 3.0063E-01 -8.5471E-01 9.9155E-01 -6.1549E-01 1.8283E-01 -1.7437E-02 S3 9.6261E-02 -4.9549E-01 1.6591E+00 -4.7891E+00 1.0030E+01 -1.5108E+01 1.4937E+01 -8.4235E+00 2.0405E+00 S4 5.0296E-02 -6.6309E-01 5.6124E+00 -3.2506E+01 1.2602E+02 -3.2449E+02 5.2674E+02 -4.8365E+02 1.9113E+02 S5 3.0187E-03 -2.0240E-01 3.1797E+00 -3.9420E+01 2.6635E+02 -1.0688E+03 2.5239E+03 -3.2453E+03 1.7494E+03 S6 4.1490E-02 -3.4542E-01 1.5405E+00 -3.3831E+00 2.0862E+00 8.8257E+00 -2.6888E+01 3.0933E+01 -1.3404E+01 S7 6.3220E-02 -6.3821E-01 2.4561E+00 -5.8382E+00 9.2484E+00 -9.5832E+00 6.8139E+00 -5.4150E+00 6.8971E+00 S8 6.9573E-02 -3.8723E-01 2.4595E-01 2.5657E+00 -1.1957E+01 3.4088E+01 -8.0135E+01 1.5867E+02 -2.4660E+02 S9 -8.8879E-02 -1.5320E-01 1.0199E-01 8.3818E-01 -2.4177E+00 3.0544E+00 -2.1481E+00 8.2931E-01 -1.3880E-01 S10 -9.4740E-02 -2.7974E-02 1.4229E-01 -9.5768E-02 -4.9809E-02 1.0771E-01 -6.4158E-02 1.7366E-02 -1.8220E-03 S11 8.0164E-02 -1.6448E-01 2.3527E-01 -2.3672E-01 1.6821E-01 -7.8701E-02 2.2619E-02 -3.6109E-03 2.4606E-04 S12 -4.0856E-03 3.4027E-01 -7.3557E-01 8.6995E-01 -6.2109E-01 2.7537E-01 -7.3815E-02 1.0913E-02 -6.8141E-04 S13 9.0083E-02 -4.6868E-01 8.1455E-01 -1.0015E+00 8.8889E-01 -5.6593E-01 2.5962E-01 -8.6349E-02 2.0831E-02 S14 -5.5784E-02 -1.0146E-01 2.2417E-01 -2.4185E-01 1.6721E-01 -7.9339E-02 2.6677E-02 -6.4589E-03 1.1300E-03

[0159] Table 14

[0160] Fig.14A The axial chromatic aberration curve of the camera lens set of Example 7 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens. Fig. 14B The astigmatism curve of the imaging lens group of Example 7 is shown, which indicates the meridional image surface curvature and the sagittal image surface curvature. Fig. 14C The distortion curve of the camera lens assembly of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Fig.14D The magnification chromatic aberration curve of the camera lens set of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 14A to FIG. 14D It can be seen that the camera lens set provided in Example 7 can achieve good imaging quality.

[0161] In summary, Examples 1 to 7 respectively satisfy the relationships shown in Table 15.

[0162]

[0163]

[0164] Table 15

[0165] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the camera lens group described above.

[0166] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A camera lens assembly, characterized in that: Along the optical axis from the object side to the image side, they include: A first lens having negative optical power, whose object side surface is concave; a second lens having optical power; A third lens element having positive refractive power and a convex image-side surface; a fourth lens having optical power and having an image side surface which is convex; A fifth lens having negative optical power, whose object side surface is convex and image side surface is concave; a sixth lens element having positive refractive power, whose object-side surface is concave and whose image-side surface is convex; and The seventh lens element has a negative optical power, and its object side surface is convex and its image side surface is concave; The number of lenses with optical power in the camera lens group is seven; Half of the maximum field of view angle Semi-FOV of the camera lens group satisfies: 64.48°≥Semi-FOV≥61.69°; and The total effective focal length f of the camera lens group and the effective focal length f1 of the first lens satisfy: -3.9≤f1 / f≤-2.

85.

2. The camera lens assembly according to claim 1, characterized in that: The total effective focal length f of the camera lens group, the effective focal length f5 of the fifth lens, and the effective focal length f6 of the sixth lens satisfy: -1.99≤(f5+f6) / f≤-1.

74.

3. The camera lens assembly according to claim 1, characterized in that: The total effective focal length f of the camera lens group and the curvature radius R1 of the object side surface of the first lens satisfy: -1.59≤R1 / f≤-1.

51.

4. The camera lens assembly according to claim 1, characterized in that: The maximum effective radius DT31 of the object-side surface of the third lens and the maximum effective radius DT21 of the object-side surface of the second lens satisfy: 0.64≤DT31 / DT21≤0.

69.

5. The camera lens assembly according to claim 1, characterized in that: The spacing distance T12 between the first lens and the second lens on the optical axis and the center thickness CT1 of the first lens on the optical axis satisfy: 0.55≤T12 / CT1≤0.

63.

6. The camera lens assembly according to claim 1, characterized in that: A center thickness CT6 of the sixth lens on the optical axis and a center thickness CT7 of the seventh lens on the optical axis satisfy: 2≤CT6 / CT7≤2.

68.

7. The camera lens assembly according to claim 1, characterized in that: Half of the diagonal length ImgH of the effective pixel area on the imaging plane of the camera lens group, the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy: 0.64≤ImgH / |R11+R12|≤0.

70.

8. The camera lens assembly according to claim 1, characterized in that: A curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens satisfy: 0.48≤(R9-R10) / (R9+R10)≤0.

56.

9. The camera lens assembly according to claim 1, characterized in that: A center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy: 2.31≤CT3 / CT4≤2.

66.

10. The camera lens assembly according to claim 1, characterized in that: The distance SAG12 from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens on the optical axis and the distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens on the optical axis satisfy: -1.02≤SAG12 / SAG32≤-0.

70.

11. The camera lens assembly according to any one of claims 1 to 10, characterized in that: A distance TTL from the object side surface of the first lens to the imaging surface of the camera lens group on the optical axis and a sum ΣCT of the center thicknesses of the first lens to the seventh lens on the optical axis satisfy: 0.56≤ΣCT / TTL≤0.

60.

12. A camera lens assembly, characterized in that: Along the optical axis from the object side to the image side, they include: A first lens having negative optical power, whose object side surface is concave; a second lens having optical power; A third lens element having positive refractive power and a convex image-side surface; a fourth lens having optical power and having an image side surface which is convex; A fifth lens having negative optical power, whose object side surface is convex and image side surface is concave; a sixth lens element having positive refractive power, whose object-side surface is concave and whose image-side surface is convex; and The seventh lens element has a negative optical power, and its object side surface is convex and its image side surface is concave; The number of lenses with optical power in the camera lens group is seven; Half of the maximum field of view angle Semi-FOV of the camera lens group satisfies: 64.48°≥Semi-FOV≥61.69°; and A center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy: 2.31≤CT3 / CT4≤2.

66.

13. The camera lens assembly according to claim 12, characterized in that: The total effective focal length f of the camera lens group, the effective focal length f5 of the fifth lens, and the effective focal length f6 of the sixth lens satisfy: -1.99≤(f5+f6) / f≤-1.

74.

14. The camera lens assembly according to claim 12, characterized in that: The total effective focal length f of the camera lens group and the curvature radius R1 of the object side surface of the first lens satisfy: -1.59≤R1 / f≤-1.

51.

15. The camera lens assembly according to claim 12, characterized in that: The maximum effective radius DT31 of the object-side surface of the third lens and the maximum effective radius DT21 of the object-side surface of the second lens satisfy: 0.64≤DT31 / DT21≤0.

69.

16. The camera lens assembly according to claim 12, characterized in that: The spacing distance T12 between the first lens and the second lens on the optical axis and the center thickness CT1 of the first lens on the optical axis satisfy: 0.55≤T12 / CT1≤0.

63.

17. The camera lens assembly according to claim 12, characterized in that: A center thickness CT6 of the sixth lens on the optical axis and a center thickness CT7 of the seventh lens on the optical axis satisfy: 2≤CT6 / CT7≤2.

68.

18. The camera lens assembly according to claim 12, characterized in that: Half of the diagonal length ImgH of the effective pixel area on the imaging plane of the camera lens group, the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy: 0.64≤ImgH / |R11+R12|≤0.

70.

19. The camera lens assembly according to claim 12, characterized in that: A curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens satisfy: 0.48≤(R9-R10) / (R9+R10)≤0.

56.

20. The camera lens assembly according to claim 12, characterized in that: The distance SAG12 from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens on the optical axis and the distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens on the optical axis satisfy: -1.02≤SAG12 / SAG32≤-0.

70.

21. The camera lens assembly according to claim 20, characterized in that: The total effective focal length f of the camera lens group and the effective focal length f1 of the first lens satisfy: -3.9≤f1 / f≤-2.

85.

22. The camera lens assembly according to any one of claims 12 to 21, characterized in that: A distance TTL from the object side surface of the first lens to the imaging surface of the camera lens group on the optical axis and a sum ΣCT of the center thicknesses of the first lens to the seventh lens on the optical axis satisfy: 0.56≤ΣCT / TTL≤0.60.

Images